BNR Race Piston
This is the GTTHUNDER/BNR Race piston. This piston is used by more Yamaha ATV GNCC Pros than any other piston on the market currently ran by 4 of 5 Yamaha GNCC Pros. This piston is 13:1 compression utilizing stock piston rings for the best wear.
- Utilizes OEM Yamaha Rings
- Includes Rings,Wrist Pin Clips and Piston
- Runs much cooler than other race pistons on market
- Large Horsepower increase for reasonable cost
- Piston Fits YFZ450 and YFZ450R
- Select Year Crankshaft in ATV